Potentials and Challenges of C-RAN Supporting Multi-RATs Toward 5G Mobile Networks
Potentials and Challenges of C-RAN Supporting Multi-RATs Toward 5G Mobile Networks
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DOI：
10.1109/access.2014.2360555
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发表时间：
2014-10
期刊：
影响因子：
3.9
通讯作者：
Rui Wang;Honglin Hu;Xiumei Yang
中科院分区：
文献类型：
--
作者：
Rui Wang;Honglin Hu;Xiumei Yang
云无线接入网（C-RAN）是未来移动的网络的关键使能器，能够满足移动的业务的爆炸性容量需求，并减轻运营商面临的资本和运营支出负担。我们首先回顾了未来移动的网络（称为5G）的要求，然后讨论了5G网络架构的新兴网络概念。然后，C-RAN和相关工作的概述。作为5G系统的一个重要场景，基于C-RAN的超密集网络部署被讨论，重点是灵活的回程，自动化的网络组织和先进的移动性管理。5G系统的另一个重要特征是多种无线电接入技术（multi-RAT）的长期共存。因此，我们提出了未来C-RAN支持的Multi-RAT的一些方向和初步的想法，包括联合资源分配，移动性管理，以及业务导向和服务映射。
This paper presents an overview of the cloud radio access network (C-RAN), which is a key enabler for future mobile networks in order to meet the explosive capacity demand of mobile traffic, and reduce the capital and operating expenditure burden faced by operators. We start by reviewing the requirements of future mobile networks, called 5G, followed by a discussion on emerging network concepts for 5G network architecture. Then, an overview of C-RAN and related works are presented. As a significant scenario of a 5G system, the ultra dense network deployment based on C-RAN is discussed with focuses on flexible backhauling, automated network organization, and advanced mobility management. Another import feature of a 5G system is the long-term coexistence of multiple radio access technologies (multi-RATs). Therefore, we present some directions and preliminary thoughts for future C-RAN-supporting Multi-RATs, including joint resource allocation, mobility management, as well as traffic steering and service mapping.